Enameling apparatus.



A! W. FORBES. ENAMEUNG APPARATUS.

APPLICATION man NOV. 13. 1915.

Patented Sept. 12, 1916.

Fig.1.

WMLW 747/3;

1m STATES rnrnirr OFFICE.

ARTHUR W. FORBES, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO J. C. RHODES & 00., INCORPORATED, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

ENAMELIN APPARATUS.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed November 13, 1915. Serial No. 61,278.

acters on the drawings indicating like parts in the several figures.

This invention relates to apparatus for 'enameling or japanning small articles, such,

for example, as eyelets or lacing hooks, and more particularly to apparatus for holding such articles while the coating is baked thereon. In enameling work of this character it is customary to insert the coated articles in holders or trays of sheet material and to assemble a number of such trays in containers or racks which are then placed in a baking oven. Containers for this purpose should be strong and rigid in construction as the weight of the articles being treated is considerable and the containers are necessarily subjected to destructive wear in being filled and handled and also by reason of the repeated heating during the baking operations. It is, however, desirable to make the containers as light as practical to facilitate the handling thereof and to make them smooth at their upper and lower surfaces so that they can be easily piled up and moved from place to place.

The general object of the present invention is to provide a container embodying the desirable qualifications above enumerated and possessing also certain further advantages which will appear hereinafter.

Containers as heretofore constructed have been provided with top and bottom members of sheet material which have, in a large measure, prevented circulation of heat in the oven upwardly through the piled up containers. A thorough circulation of the heat is desirable in order that all the articles may be subjected to the equal degree of temperature which is important in securing a uniform coloring of the enamel.

A feature of the invention, accordingly, consists in a container having open top and bottom members formed of angle iron edge pieces and relatively narrow bridge members connecting the angle irons.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings, in which,

Figure 1 is a view of the apparatus in side elevation; Fig. 2 is a view in end elevation, and Fig. 3 is a fragmentary view in perspective.

The apparatus herein disclosed is shaped in general like a rectangular box open at both ends. The top member comprises a pair of angle irons 10 disposed in parallel relation with their flanges extending outwardly. The angle irons 10 are maintained rigidly in spaced relation by a pair of bridge members 14: having downwardly turned flanges which rest against the inner surface of the angle irons and to which they I are secured by rivets. The bottom member is similarly formed from angle irons 12 and bridge members 16. Both the top and the bottom members constitute a rigid frame which is open except for the relatively narrow bridge members 14 and 16. It will be apparent that each of these frames is stiff and rigid in construction, this being, as already pointed out, a desirable characteristic of the container.

The top and bottom members are connected upon each side of the container by a pair of upright bars 18 which rest at their ends against the horizontally extending flanges of the angle irons 10 and 12 and are secured by rivets 22 to the vertically extending flanges of the'angle irons. It will thus be seen that the entire frame-work of the apparatus is formed of bar or angle iron which may be so designed as to afford maximum strength for a minimum weight of material.

The walls of the container comprise corrugated metal sheets in which the corrugations are disposed horizontally and oppositely, thus providing channels into which the trays may he slipped in filling the con tainer. It will be understood that the trays commonly used comprise merely strawboard sheets cut to the proper size to slip into the container and having the articles to be baked inserted therein. The corrugated sheets 20 are riveted at their upper and lower edges to the angle irons 10 and 12. Each sheet is provided with two vertically extending rows of loops 21 formed by cutting parallel slits in the outwardly convex portions of every third or fourth corrugation and bending the material between the slits outwardly. The loops formed in the walls are threaded upon the bars 18 so that the walls are held with the outwardly convex portions of their corrugations against the inner surface of the bars 18 while the integral loops 21 pass over the outer surface of the side bars. To accommodate the shape of the loops the outer edges of the bars 18 are beveled as shown in Figs. 1 and 3. It will be apparent that the loops 21 and bars 18 are disposed entirely without the inner concave portions of the corrugations so that the insertion of the strawboard trays is in no way obstructed. In order'to facilitate the handling of the container a cross piece 24: is arranged to extend between the outer ends of each pair of angle irons 10 and 12. This may be conveniently grasped by the workman in removing a container from a number piled together.

In constructing a container of the character above outlined it has been found desirable to complete the top and bottom frames, then to assemble the walls 20 and side bars 18, and finally to insert the rivets necessary to hold all the members together.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States:

1. A device of the class described, including angle iron edge pieces, bridge members connecting the edge pieces in pairs and thereby forming upper and lower frames, upright bars connecting the upper and lower frames, and corrugated walls secured to said bars.

2. A device of the class described, including angle iron edge pieces, flanged bridge members interposed between the adjacent faces of each pair of edge pieces and arranged to hold said pieces positively in spaced relation, upright bars connecting re spectively both right and both left edge pieces, corrugated walls disposed within the copies of this patent may be obtained for upright bars, and a cross piece extending between a pair of edge pieces adjacent to their outer ends.

3. A device of the class described, including a rigid frame having vertically extend. ing side bars, and corrugated sheet metal walls having loops struck out and threaded upon the side bars.

4. A device of the class described, including a rigid frame having vertically disposed side bars adjacent to either end, and corrugated sheet metal walls located inside said side bars and having a row of loops struck out and. threaded upon the side bars to hold the walls in engagement with the bars.

5. A device of the class described, including'a frame having upright side bars, and corrugated sheet metal walls whereof the corrugations extend horizontally, and a series of loops struck outwardly from the outwardly convex portion of certain corrugations, said bars passing through the loops so formed and maintaining the walls in position.

6. A device of the class described, including upright side bars, and corrugated sheet metal walls whereof the corrugations form oppositely disposed channels, said walls be-. ing disposed with the outwardly convex portions of their corrugations against the inner surface of the side bars and having integral loops which pass over the outer surface of the side bars.

7. A device of the class described, including upper and lower frames comprising angle irons disposed with their flanges extending outwardly, relatively narrow bridge members connecting the angle irons and forming with said angle irons substantially open top and bottom members for the device, and corrugated side walls secured at their upper and lower edges to the inner face of the angle irons.

In testimony whereof I have signed my name to this specification.

ARTHUR W. FORBES.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

